C# DataContract，默认DataMember值将在应用程序之间工作

我有一门课是这样的：

[DataContract, Serializable]
    public class MyInfo
    {
        string firstName;
        string fullName;
    }

[DataContract, Serializable]
    public class MyInfo
    {
        string firstName;
        string fullName;
        Dictionary<string, string> parameter = null;
    }

        [DataContract, Serializable]
        public class MyInfo
       {
          [DataMember(Name = "firstName")]
          public string firstName { get; set; }
          [DataMember(Name = "fullName")]
          public string fullName { get; set; }
       }

        [DataContract, Serializable]
        public class MyInfo
       {
            [DataMember(Name = "firstName")]
            public string firstName { get; set; }
            [DataMember(Name = "fullName")]
            public string fullName { get; set; }
            [DataMember(Name = "parameter")]
            public Dictionary<string, string> parameter { get; set;}
       }

有一个像GetMyInfoMyInfo这样公开的api，上面的类正在其中使用

我的四个App1、app2、app3、app4应用程序正在使用此合同。 到目前为止，一切都很顺利。但是我得到了一个新的要求，即向接口添加一个新成员，该接口是一个字典

新类将如下所示：

[DataContract, Serializable]
    public class MyInfo
    {
        string firstName;
        string fullName;
    }

[DataContract, Serializable]
    public class MyInfo
    {
        string firstName;
        string fullName;
        Dictionary<string, string> parameter = null;
    }

        [DataContract, Serializable]
        public class MyInfo
       {
          [DataMember(Name = "firstName")]
          public string firstName { get; set; }
          [DataMember(Name = "fullName")]
          public string fullName { get; set; }
       }

        [DataContract, Serializable]
        public class MyInfo
       {
            [DataMember(Name = "firstName")]
            public string firstName { get; set; }
            [DataMember(Name = "fullName")]
            public string fullName { get; set; }
            [DataMember(Name = "parameter")]
            public Dictionary<string, string> parameter { get; set;}
       }

现在我的问题是，由于类定义已更改，我的app1和app2将使用新的类定义编译，因为app1和app2需要字典，而app3和app4不需要字典，这就是我创建字典作为默认参数的原因

---

现在，如果app3或app4没有使用新的类定义编译，并且调用GetMyInfoMyInfo myInfo，那么这些东西会工作吗，我的意思是所有的序列化都不会中断。

根据您的描述，我制作了一个演示，可以正常运行。我没有发现任何错误

Client1使用如下类：

[DataContract, Serializable]
    public class MyInfo
    {
        string firstName;
        string fullName;
    }

[DataContract, Serializable]
    public class MyInfo
    {
        string firstName;
        string fullName;
        Dictionary<string, string> parameter = null;
    }

        [DataContract, Serializable]
        public class MyInfo
       {
          [DataMember(Name = "firstName")]
          public string firstName { get; set; }
          [DataMember(Name = "fullName")]
          public string fullName { get; set; }
       }

        [DataContract, Serializable]
        public class MyInfo
       {
            [DataMember(Name = "firstName")]
            public string firstName { get; set; }
            [DataMember(Name = "fullName")]
            public string fullName { get; set; }
            [DataMember(Name = "parameter")]
            public Dictionary<string, string> parameter { get; set;}
       }

服务器端将收到以下消息：

Client2使用如下类：

[DataContract, Serializable]
    public class MyInfo
    {
        string firstName;
        string fullName;
    }

[DataContract, Serializable]
    public class MyInfo
    {
        string firstName;
        string fullName;
        Dictionary<string, string> parameter = null;
    }

        [DataContract, Serializable]
        public class MyInfo
       {
          [DataMember(Name = "firstName")]
          public string firstName { get; set; }
          [DataMember(Name = "fullName")]
          public string fullName { get; set; }
       }

        [DataContract, Serializable]
        public class MyInfo
       {
            [DataMember(Name = "firstName")]
            public string firstName { get; set; }
            [DataMember(Name = "fullName")]
            public string fullName { get; set; }
            [DataMember(Name = "parameter")]
            public Dictionary<string, string> parameter { get; set;}
       }

服务器端将收到以下消息：

服务器端使用与client2相同的类